A cow has 4 stomachs. They are: the rumen, where the food is first stored, the reticulum where food that has been more thoroughly chewed is stored once the cow has chewed the cud and has swallowed it; the omasum where extra water is squeezed out, and finally the food goes to the abomasum. Some of the digested food is then stored in the cow's udder where it is made into milk.